Initial commit of 2D RPG Engine. @dacav come help.

.gitignore

@@ -0,0 +1 @@
+/bin

CMakeLists.txt

@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(bettola VERSION 0.1)
+
+# Let's use C++17?
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+# Deps.
+find_package(SDL3   REQUIRED)
+find_package(GLEW   REQUIRED)
+find_package(OpenGL REQUIRED)
+
+add_executable(bettola src/main.cpp)
+
+target_link_libraries(bettola PRIVATE SDL3::SDL3 GLEW::glew OpenGL::GL)
+

Makefile

@@ -0,0 +1,46 @@
+SHELL:=/bin/bash
+BUILD_DIR:=bin
+PROJECT_NAME:=bettola
+EXECUTABLE:=$(BUILD_DIR)/$(PROJECT_NAME)
+
+CXX_COMPILER:=clang++
+CMAKE_MAKEFILE:=$(BUILD_DIR)/Makefile
+
+.PHONY: all build config run clean help
+
+# Default.
+all: build
+
+# Build project, if not configured, then do that first.
+build: $(CMAKE_MAKEFILE)
+	@echo "==== Building Bettola ===="
+	@cmake --build $(BUILD_DIR)
+
+# run 'config' target if the build directory or CMake cache is missing.
+$(CMAKE_MAKEFILE):
+	$(MAKE) config
+
+config:
+	@echo "==== Configuring Bettola with CMake ===="
+	@mkdir -p $(BUILD_DIR)
+	@cmake -S . -B$(BUILD_DIR) -DCMAKE_CXX_COMPILER=$(CXX_COMPILER)
+
+# Build and run.
+run: all
+	@echo "==== Running Bettola ===="
+	$(EXECUTABLE)
+
+# Remove build dir.
+clean:
+	@echo "==== Cleaning Bettola ===="
+	@rm -rf $(BUILD_DIR)
+	@echo "==== Project Cleaned ===="
+
+help:
+	@echo "Available commands:"
+	@echo "	make        - Build the project (default)."
+	@echo "	make build  - Build the project."
+	@echo "	make run    - Build and run the project."
+	@echo "	make config - Force CMake to re-configure the project."
+	@echo "	make clean  - Remove all build files"
+

README.org

@@ -0,0 +1,39 @@
+#+TITLE: Bettola Game
+
+A 2D RPG game and engine created with C++, SDL3, and OpenGL.
+
+* Dependencies
+The following dependencies are requird:
+ - A C++ compiler (e.g., clang, g++)
+ - CMake (3.16 or newer)
+ - SDL3 development libraries
+ - GLEW development libraries
+
+** Installation (Debian)
+You can install all required dependencies with the following command:
+#+BEGIN_SRC bash
+sudo apt update
+sudo apt install build-essential clang cmake libsdl3-dev libglew-dev
+#+END_SRC
+
+* Build Instructions
+This project uses a top-level Makefile to simplify the CMake workflow. All build artifacts will be placed in the =bin/= directory.
+
+Run the following from the root of the project directory.
+
+ - *Build the project:*
+   The executable will be located in =bin/bettola=.
+   #+BEGIN_SRC bash
+   make
+   #+END_SRC
+
+ - *Build and run the project:*
+   #+BEGIN_SRC bash
+   make run
+   #+END_SRC
+
+ - *Clean the project:*
+   This removes the =bin/= directory.
+   #+BEGIN_SRC bash
+   make clean
+   #+END_SRC

src/main.cpp

@@ -0,0 +1,84 @@
+#include <SDL3/SDL.h>
+#include <GL/glew.h>
+#include <SDL3/SDL_error.h>
+#include <cstdio>
+
+const int SCREEN_WIDTH  = 800;
+const int SCREEN_HEIGHT = 600;
+
+int main(int argc, char* argv[]) {
+  /* Initialise SDL. */
+  if(!SDL_Init(SDL_INIT_VIDEO)) {
+    fprintf(stderr, "Failed to init SDL! SDL ERROR: %s\n", SDL_GetError());
+    return -1;
+  }
+
+  /* OpenGL context attributes */
+  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);
+  SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_CORE);
+
+  /* Create the window. */
+  SDL_Window* window = SDL_CreateWindow(
+    "Bettola Makes No Sense!",
+    SCREEN_WIDTH,
+    SCREEN_HEIGHT,
+    SDL_WINDOW_OPENGL
+  );
+
+  if(!window) {
+    fprintf(stderr, "Failed to create window! SDL_ERROR: %s\n", SDL_GetError());
+    SDL_Quit();
+    return -1;
+  }
+
+  /* OpenGL context. */
+  SDL_GLContext gl_context = SDL_GL_CreateContext(window);
+  if(!gl_context) {
+    fprintf(stderr, "Failed to create OpenGL context! SDL_ERROR: %s\n", SDL_GetError());
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return -1;
+  }
+
+  /* GLEW init - Must be done AFTER creating the GL context. */
+  glewExperimental = GL_TRUE;
+  GLenum glew_error = glewInit();
+  if(glew_error != GLEW_OK) {
+    fprintf(stderr, "Failed to init GLEW! %s\n", glewGetErrorString(glew_error));
+    SDL_GL_DestroyContext(gl_context);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+    return -1;
+  }
+
+  /* Set viewport. */
+  glViewport(0,0,SCREEN_WIDTH,SCREEN_HEIGHT);
+
+  /* Main game loop.. For now. */
+  bool is_running = true;
+  SDL_Event event;
+
+  while(is_running) {
+    /* Event handling. */
+    while(SDL_PollEvent(&event)) {
+      if(event.type == SDL_EVENT_QUIT) {
+        is_running = false;
+      }
+    }
+
+    /* Render that b*tch. */
+    glClearColor(0.1f, 0.1f, 0.3f, 1.0f); /* Dark blue or something. */
+    glClear(GL_COLOR_BUFFER_BIT);
+
+    /* Swap the buffers. */
+    SDL_GL_SwapWindow(window);
+  }
+
+  /* Clean up after ourselves. */
+  SDL_GL_DestroyContext(gl_context);
+  SDL_DestroyWindow(window);
+  SDL_Quit();
+
+  return 0;
+}